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Heavy Duty Pickup
2022, 2023, 2024
Gmc Sierra
After successfully introducing the AT4 version for the Sierra in 2018, GMC took another step and launched the AT4X version, which aimed higher than its cousin.
Gallery
20 photos
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Available Engines
4 enginesGMC Sierra AT4X 6.2L V8 VVT DI 10 AT 2WD (426 HP) Short Box
6.2L V8 VVT DI 10 AT 2WD (426 HP) Short Box
GMC Sierra AT4X 6.2L V8 VVT DI 10 AT 2WD (426 HP) Standard Box
6.2L V8 VVT DI 10 AT 2WD (426 HP) Standard Box
GMC Sierra AT4X 6.2L V8 VVT DI 10 AT AWD (426 HP) Short Box
6.2L V8 VVT DI 10 AT AWD (426 HP) Short Box
GMC Sierra AT4X 6.2L V8 VVT DI 10 AT AWD (426 HP) Standard Box
6.2L V8 VVT DI 10 AT AWD (426 HP) Standard Box
More Gmc Gmc Sierra
Explore all generations, engine specs and production history.